Adam,
Thanks for your responding. I have added what you mentioned, but the error is still there.
(0) 19930101
Variable: u
Type: float
Total Size: 664692 bytes
166173 values
Number of Dimensions: 2
Dimensions and sizes: [NbLongitudes | 579] x [NbLatitudes | 287]
Coordinates:
NbLongitudes: [98.33333333332349..290.9999999999709]
NbLatitudes: [-17.79766126545592..60.88112837177402]
Number Of Attributes: 5
date : 1993-01-01 00:00:00.000000 UTC
Date_CNES_JD : 15706
units : cm/s
long_name : U
_FillValue : 1.844674e+19
Variable: v
Type: float
Total Size: 664692 bytes
166173 values
Number of Dimensions: 2
Dimensions and sizes: [NbLongitudes | 579] x [NbLatitudes | 287]
Coordinates:
NbLongitudes: [98.33333333332349..290.9999999999709]
NbLatitudes: [-17.79766126545592..60.88112837177402]
Number Of Attributes: 5
_FillValue : 1.844674e+19
long_name : V
units : cm/s
Date_CNES_JD : 15706
date : 1993-01-01 00:00:00.000000 UTC
Variable: speed
Type: float
Total Size: 664692 bytes
166173 values
Number of Dimensions: 2
Dimensions and sizes: [579] x [287]
Coordinates:
Number Of Attributes: 1
_FillValue : 1.844674e+19
(0) check_for_y_lat_coord: Warning: Data either does not contain a valid latitude coordinate array or doesn't contain one at all.
(0) A valid latitude coordinate array should have a 'units' attribute equal to one of the following values:
(0) 'degrees_north' 'degrees-north' 'degree_north' 'degrees north' 'degrees_N' 'Degrees_north' 'degree_N' 'degreeN' 'degreesN' 'deg north'
(0) check_for_lon_coord: Warning: Data either does not contain a valid longitude coordinate array or doesn't contain one at all.
(0) A valid longitude coordinate array should have a 'units' attribute equal to one of the following values:
(0) 'degrees_east' 'degrees-east' 'degree_east' 'degrees east' 'degrees_E' 'Degrees_east' 'degree_E' 'degreeE' 'degreesE' 'deg east'
(0) gsn_csm_map_ce: Warning: you set mpMaxLonF to a value > 180, but
(0) didn't set mpCenterLonF. Setting mpCenterLonF to 194.5
The newer code is
do nt=nb,ne
time=in[:] ->time(nt-1)
utc_date = cd_calendar(time, -3)
print(""+utc_date)
;************************************************
; read in zonal [u] and meridional [v] winds
;************************************************
tmp = in[:]->UGRD_10maboveground(nt-1,:,:)
u = tmp({lat_min:lat_max},{lon_min:lon_max})/100.0
tmp = in[:]->VGRD_10maboveground(nt-1,:,:)
v = tmp({lat_min:lat_max},{lon_min:lon_max})/100.0
speed = sqrt(u^2 + v^2)
copy_VarCoords(u,speed)
vcres@tiMainString = "Wind 10m above ground"
vcres@gsnLeftString = utc_date
vcres@gsnRightString = "m/s"
wks = gsn_open_wks(wks_type ,"wind_"+utc_date) ; open a ps file
gsn_define_colormap(wks,"rainbow") ;"BlAqGrYeOrRe") ; choose colormap
printVarSummary(u)
printVarSummary(v)
printVarSummary(speed)
plot=gsn_csm_vector_scalar_map_ce(wks,u(NbLatitudes|:,NbLongitudes|:),v(NbLatitudes|:,NbLongitudes|:),speed(NbLatitudes|:,NbLongitudes|:),vcres) ; create plot
end do
2013-09-06
朱学明
发件人：Adam Phillips <asphilli@ucar.edu>
发送时间：2013-09-06 02:56
主题：Re: [ncl-talk] check_for_y_lat_coord
收件人："朱学明"<557xiaozhu@163.com>
抄送："ncl-talk@ucar.edu USERS"<ncl-talk@ucar.edu>
Thanks for sending printVarSummary's of your three arrays, as that likely identifies the issue. Unlike your u and v arrays, your speed array does not have any metadata/coordinate variables associated with it.
Try adding this after you create your speed array:
copy_VarCoords(u,speed)
Alternatively, you can do this:
speed = u
speed = (/ sqrt(u^2 + v^2) /) ; overwrite speed values, but leave the metadata
This is all assuming that your NbLongitudes / NbLatitudes have units attributes set. See this FAQ here:
http://www.ncl.ucar.edu/FAQ/#err_msgs_027
Finally, note that your u/v/speed arrays are dimensioned longitude by latitude. The gsn_csm_vector_scalar_map_ce plotting function expects the order to be latitude by longitude. Thus, you will have to reorder your dimensions like this:
plot=gsn_csm_vector_scalar_map_ce(wks,u(NbLatitudes|:,NbLongitudes|:),v(NbLatitudes|:,NbLongitudes|:),speed(NbLatitudes|:,NbLongitudes|:),vcres)
Hope that helps. If you have any further questions please respond only to the ncl-talk email list.
Adam
On 09/05/2013 12:39 PM, 朱学明 wrote:
Hi All,
I am trying to plot the geostrophic current fields from aviso. And get some screen output and error messages as follow,
(0) 19930101
Variable: u
Type: float
Total Size: 664692 bytes
166173 values
Number of Dimensions: 2
Dimensions and sizes: [NbLongitudes | 579] x [NbLatitudes | 287]
Coordinates:
NbLongitudes: [98.33333333332349..290.9999999999709]
NbLatitudes: [-17.79766126545592..60.88112837177402]
Number Of Attributes: 5
date : 1993-01-01 00:00:00.000000 UTC
Date_CNES_JD : 15706
units : cm/s
long_name : U
_FillValue : 1.844674e+19
Variable: v
Type: float
Total Size: 664692 bytes
166173 values
Number of Dimensions: 2
Dimensions and sizes: [NbLongitudes | 579] x [NbLatitudes | 287]
Coordinates:
NbLongitudes: [98.33333333332349..290.9999999999709]
NbLatitudes: [-17.79766126545592..60.88112837177402]
Number Of Attributes: 5
_FillValue : 1.844674e+19
long_name : V
units : cm/s
Date_CNES_JD : 15706
date : 1993-01-01 00:00:00.000000 UTC
Variable: speed
Type: float
Total Size: 664692 bytes
166173 values
Number of Dimensions: 2
Dimensions and sizes: [579] x [287]
Coordinates:
Number Of Attributes: 1
_FillValue : 1.844674e+19
(0) check_for_y_lat_coord: Warning: Data either does not contain a valid latitude coordinate array or doesn't contain one at all.
(0) A valid latitude coordinate array should have a 'units' attribute equal to one of the following values:
(0) 'degrees_north' 'degrees-north' 'degree_north' 'degrees north' 'degrees_N' 'Degrees_north' 'degree_N' 'degreeN' 'degreesN' 'deg north'
(0) check_for_lon_coord: Warning: Data either does not contain a valid longitude coordinate array or doesn't contain one at all.
(0) A valid longitude coordinate array should have a 'units' attribute equal to one of the following values:
(0) 'degrees_east' 'degrees-east' 'degree_east' 'degrees east' 'degrees_E' 'Degrees_east' 'degree_E' 'degreeE' 'degreesE' 'deg east'
(0) gsn_csm_map_ce: Warning: you set mpMaxLonF to a value > 180, but
(0) didn't set mpCenterLonF. Setting mpCenterLonF to 194.5
My code is as follow,
do nt=nb,ne
in = addfile(infile(nt-1),"r")
utc_date = str_get_cols(infile(nt-1),44,51)
print(""+utc_date)
;************************************************
; read in zonal [u] and meridional [v] winds
;************************************************
tmp = in->Grid_0001
u = tmp({lon_min:lon_max},{lat_min:lat_max}) ;/100.0
tmp = in->Grid_0002
v = tmp({lon_min:lon_max},{lat_min:lat_max}) ;/100.0
speed = sqrt(u^2 + v^2)
vcres@tiMainString = "Geostrophic Current Field"
vcres@gsnLeftString = utc_date
vcres@gsnRightString = "m/s"
wks = gsn_open_wks(wks_type ,"uv_"+utc_date) ; open a ps file
gsn_define_colormap(wks,"rainbow") ;"BlAqGrYeOrRe") ; choose colormap
printVarSummary(u)
printVarSummary(v)
printVarSummary(speed)
plot=gsn_csm_vector_scalar_map_ce(wks,u,v,speed,vcres) ; create plot
end do
Anyone can help me for figuring out the error? Thanks.
2013-09-06
朱学明
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--
______________________________________________________________
Adam Phillips asphilli@ucar.edu
NCAR/Climate and Global Dynamics Division (303) 497-1726
P.O. Box 3000
Boulder, CO 80307-3000 http://www.cgd.ucar.edu/cas/asphilli
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Received on Thu Sep 5 13:21:25 2013
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